Finding the Fourth Proportional to 41,978.81, 57,930.76 and 23,115.94

Step by Step Solution

1. Step 1: Write the proportion equation
   41,978.81 : 57,930.76 = 23,115.94 : x
2. Step 2: Convert to fraction form
   41,978.81/57,930.76 = 23,115.94/x
3. Step 3: Cross multiply
   41,978.81x = 57,930.76 × 23,115.94
4. Step 4: Simplify right side
   41,978.81x = 1,339,123,856.38
5. Step 5: Solve for x
   x = 1,339,123,856.38/41,978.81
6. Step 6: Final answer
   x = 31,899.99